Confused...

Stefani • Sun, Feb 09 2014 • 22, TTC Baby #1

Period 5 days late, I've took the clear blue pregnancy test and both were bfn. I don't have pms symptoms or pregnancy symptoms but I've noticed recently when I lay on my stomach I feel like I have to pee and have slight pressure feeling in lower stomach. As well as on and tingling feeling in left side. I'm confused and wondering if any one else has had this happen to them?